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The Effect of Neuropsychological Impairment and Feigned Adjudicative Incompetence on the Inventory of Legal Knowledge

Gaskell, Michael Brenton
http://rave.ohiolink.edu/etdc/view?acc_num=xavier1472811017

Abstract Details

2016, Doctor of Psychology (Psy.D.), Xavier University, Psychology.
The Inventory of Legal Knowledge (ILK) is a forced-choice performance validity measure designed to assess feigned adjudicative competence in competence to stand trial (CST) evaluations. Despite the prevalence of neurocognitive injury and illness in forensic populations, the ILK’s sensitivity to neurocognitive impairment has not been systematically examined. We recruited 73 individuals from a hospital-based neuropsychology practice and volunteer service. After administering the Montreal Cognitive Assessment (MoCA) in order to categorize individuals as impaired or non-impaired, we administered the ILK to participants under honest or feigning instructions. Across all groups, feigning participants obtained lower ILK total scores compared to honest participants. Impairment level affected ILK total scores across both instruction sets, with impaired participants obtaining lower ILK total scores than honest participants, although this difference was not significant within honest or feigning conditions. Sensitivity and specificity for the ILK to detect feigned impairment in the present sample was 73% and 93.33%, respectively, which is similar to non-clinical groups from the ILK normative studies. Fourteen individual items were at least moderately correlated to MoCA total score and three of were strongly correlated. Future research should focus on the value of deleting items that are correlated with MoCA performance and determining the influence of actual legal knowledge on ILK performance.
Kathleen Hart, Ph.D. (Committee Chair)
John Barrett, Ph.D. (Committee Member)
Nicholas Doninger, Ph.D. (Committee Member)
54 p.
Clinical Psychology; Psychological Tests
Malingering; Competence to Stand Trial; The Inventory of Legal Knowledge; Neuropsychological Impairment, Forensic Neuropsychology; Neurocognitive Disorder; Dementia, Older Adults

Recommended Citations

Citations

  • Gaskell, M. B. (2016). The Effect of Neuropsychological Impairment and Feigned Adjudicative Incompetence on the Inventory of Legal Knowledge [Doctoral dissertation, Xavier University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=xavier1472811017

    APA Style (7th edition)

  • Gaskell, Michael. The Effect of Neuropsychological Impairment and Feigned Adjudicative Incompetence on the Inventory of Legal Knowledge . 2016. Xavier University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=xavier1472811017.

    MLA Style (8th edition)

  • Gaskell, Michael. "The Effect of Neuropsychological Impairment and Feigned Adjudicative Incompetence on the Inventory of Legal Knowledge ." Doctoral dissertation, Xavier University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=xavier1472811017

    Chicago Manual of Style (17th edition)

xavier1472811017
441
© 2016, all rights reserved.
This open access ETD is published by Xavier University Psychology and OhioLINK.